<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<div id="app">
    <span> {{msg}}</span>===={{num}}====
    <ul>
        <li v-for="item in list">{{item}}</li>
    </ul>
    <hr>
    <button @click="num++">点击加</button> <input type="text">
    <div id="main" style="width: 600px;height:400px;"></div>



</div>
<script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>

<script src="./lib/echarts.min.js"></script>

<script src="https://cdn.bootcdn.net/ajax/libs/vue/2.7.14/vue.min.js"></script>
<script>
    const vu = new Vue({
        el: "#app",
        data: {
            msg: 'hello vue',
            num: 1,
            list: []
        },
        //数据创建响应之前
        beforeCreate() {
            console.log(this.msg, 'beforeCreate')

        },
        //数据创建响应之后
        created() {
            console.log(this.msg, 'beforeCreate')
            axios('http://hmajax.itheima.net/api/province').then(res => {
                    console.log(res)
                    this.list = res.data.list
                })
                //发送axios在created里面


        },
        //dom渲染之前
        beforeMount() {
            console.log('beforeMount', document.querySelector('span'))

        },
        //dom渲染之后
        mounted() {
            console.log('beforeMount', document.querySelector('span'))
                //操作dom元素在mounted里面
            document.querySelector('input').focus()
                // 基于准备好的dom，初始化echarts实例
            var myChart = echarts.init(document.getElementById('main'));

            // 指定图表的配置项和数据
            var option = {
                title: {
                    text: 'ECharts 入门示例'
                },
                tooltip: {},
                legend: {
                    data: ['销量']
                },
                xAxis: {
                    data: ['衬衫', '羊毛衫', '雪纺衫', '裤子', '高跟鞋', '袜子']
                },
                yAxis: {},
                series: [{
                    name: '销量',
                    type: 'bar',
                    data: [5, 20, 36, 10, 10, 20]
                }]
            };

            // 使用刚指定的配置项和数据显示图表。
            myChart.setOption(option);


        },
        beforeUpdate() {
            console.log('beforeUpdate', this.num)

        },
        updated() {

            console.log('beforeUpdate', this.num)


        },
        methods: {

        },
        computed: {

        }
    })
</script>






</body>

</html>